The core, with an added "daddy" dynamic.
Rex McCree, an ex-military soldier and best friend to a girl's father, promises to protect her following her father's death. Guardian Daddy by Lena Little
The hero is the "father's best friend," making the relationship "forbidden". The core, with an added "daddy" dynamic
Rex is described as a possessive hero (e.g., "His touch isn't innocent, and his eyes burn with hunger"). "His touch isn't innocent